How To Fix SWLT112 - Cannot create ATC cache: Enqueue not possible. Check enqueue server

SAP Error Message - Details

• Message type: E = Error

• Message class: SWLT - Message Class for ... guess!

• Message number: 112

• Message text: Cannot create ATC cache: Enqueue not possible. Check enqueue server

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SWLT112 - Cannot create ATC cache: Enqueue not possible. Check enqueue server ?

  The SAP error message SWLT112: Cannot create ATC cache: Enqueue not possible. Check enqueue server typically occurs in the context of the ABAP Test Cockpit (ATC) when the system is unable to create or access the ATC cache due to issues with the enqueue server. This can happen for several reasons, and here are some potential causes, solutions, and related information:
  Causes:
  
  Enqueue Server Issues: The enqueue server may be down or not functioning properly. This can prevent the system from acquiring the necessary locks to create or access the ATC cache.
  Network Issues: There may be network connectivity problems between the application server and the enqueue server.
  Configuration Issues: Incorrect configuration settings in the SAP system can lead to enqueue server problems.
  Resource Limitations: The enqueue server may be overloaded or running out of resources, leading to failures in processing enqueue requests.
  Database Lock Issues: There may be locks at the database level that are preventing the enqueue server from functioning correctly.
  
  Solutions:
  
  
  Check Enqueue Server Status:
  
  Use transaction SM12 to check for any existing locks that might be causing issues.
  Use transaction SM51 to check the status of the enqueue server and ensure it is running.
  
  
  
  Restart Enqueue Server:
  
  If the enqueue server is down, you may need to restart it. This can typically be done through the SAP system administration tools.
  
  
  
  Check Network Connectivity:
  
  Ensure that there are no network issues between the application server and the enqueue server. You can use tools like ping or traceroute to diagnose connectivity issues.
  
  
  
  Review Configuration:
  
  Check the configuration settings in the SAP system related to the enqueue server. Ensure that they are set up correctly.
  
  
  
  Monitor System Resources:
  
  Use transaction ST02 (Tune Summary) to monitor memory and buffer usage. If the enqueue server is overloaded, consider optimizing resource usage or increasing system resources.
  
  
  
  Check for Database Locks:
  
  Use transaction SM12 to identify and resolve any database locks that may be affecting the enqueue server.
  
  
  
  Consult SAP Notes:
  
  Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  
  
  
  Related Information:
  
  ATC (ABAP Test Cockpit): A tool used for static code checks in ABAP programs. It relies on the enqueue server to manage locks and cache data.
  Enqueue Server: A component in the SAP system responsible for managing locks on objects to ensure data consistency.
  Transaction Codes:
  
  SM12: Display and manage locks.
  SM51: Display instances and check the status of application servers.
  ST02: Monitor memory and buffer usage.
  
  
  
  If the issue persists after trying the above solutions, it may be necessary to involve your SAP Basis team or consult SAP support for further assistance.